Apparatus for feeding separate sheets of paper to printing-presses.



PATENTED MAR. 12, 1907.

J W. HOAG. APPARATUS FOR FEEDING SEPARATE SHEETS OF PAPER TO PRINTINGPRE SSES.

APPLICATION FILED JAN. 3, 1905.

[ UNITED 'srArns PAT NT OFFICE.

. JAMES w. HOAG, or SAN- FRAneisoo, tandem, ASSIGNOR TO THE HoAe RAPIDPRESS COMPANY, or SAN FRANCISCO, CALIFORNIA,A CORPORA- Tron orCALIFORNIA.

APPARATUS FOR FEEDlN G SEPARATESHEETS OF PAPER T PRINTING-PRESSES.

Specification of Letters 'Iatent.

Patented March 12, 1907.

Application filed. January 3. 1905. serial 239.476-

-Press, of which the following is a specification;

-My' invention relates to improvements in apparatus for feedingseparate-sheets'of paper to aprinting-press, and especially to de vicesof the class "described in Patent-No.-

7 69,747, issued to me September, 1904; and

the objects of my improvement are to provide'a means ofovercoming anobstacle to continuous feeding, the nature of which will more fullyappear herein.

" My ob ectis attainedby the means-.illu's trated in the accompanyingdrawing, of .which Figure 1 is'a View of my feeding apparatus, partly inlongitudinal section and partly diagrammatic, the standard on the nearside of of the machine being removed, showing the paper pile-with itsfront edge raisedfrom the.

floor and abutting against the front j oggingboard. Fig. 2 is, a similarviewshowing the frontedge away from the front joggingboard and showingmy improvement described herein. Fig. 3 is a diagramcof the front end ofthe paper pile,,showing said pile lying closely against the floor.

'S'milar numerals refer to similar parts throughout the drawings.

, 1 is a reciprocating feed-table carrying a paperpile 2 and having avacuum-roller '3 adapted to engage the lowermost sheet ofsaid pileatsuitable times, as fully detailed in Patent No. 769,747, abovereferredto. 4 is a finger or series of fingers adaptedto lift the paper pileafter thelowermost sheet has been engaged by said. vacuum-cylinder andto raise said pile 'to the gosition indicated in It has been. found inthe practical operation of the devices described that the-lifting of thesuper osed sheets is attended-With'the liability of t eir remaining intheir-liftedposition, abutting against the front oggingboard 5. Fromthis cause the, lowermost sheet is not in'prope'r position to be engagedby vacuumcy inder 3 at thedesired time;

and my improvement consists in providing 1 means of dropping paper pile2 to the floor of reciprocating table after it has been lifted by finger4, as shown at 6 in Fig. 3. The

means'I adopt for accomplishing this result are shown in 2. The frontjogging-board 5 is movable relatively to said paper pile in such manneras to disengage it from the front edge of said pile, whereupon said piledescends by gravity to the desired position. For this purpose l'use themechanism illustrated in Fig. 2, which shows the board 5 as being hingedat'7, said hinge being supported by an arm 8 on the table 1. A rod. 12,

attached to the jogging-board 5, extends through the spring 9-and isconnected there'- with, whereby the spring tends to hold the board 5against the face of pile 2. A projection 10-, stationary on main frame,as shown in cutawaypart of track at 11, Fig. 2, and not mov-. Y

I able with feed-table, engagesboard 5 and dis engages itfrom contactwith paper pile 2, as

aforesaid, at a suitable period of its return reciprocation. This-period'is preferably near the end of its return movement, so that, whentable 1begins its forward movement said engagement with projection 10 isreleased, and board 5 again abuts against the I By this means the paperpile is dropped to the floor ofsaid table. at

face of said pile.

each reciprocation, and continuous feeding of the lowermost sheetof saidpile "is not interfered with by the tendency of said pile to re-- mainin its elevated position.

- Having described my invention, what I I claim as new, and desire toprotect by Letters Patent of the United States, is

1. The combination with a, reciprocating feed-table and avacuum-cylinder, means; mounted on said table-forcarrying a paper pile,of a stationary finger adapted to'lift the i paper pile after thelowermost sheet has been engagedby said vacuum-cylinder, a joggingboardhinged at its upper edge, a spring mounted on said table adjacent to thelower end of said jogging-board, a rod attached to. said jogging-boardand extending tln'ough said spring and movable thereby, and astationaryprojection adapted to engage said board onthe return movement of saidtable.

2. In afeed apparatusof the class de scribed, the combination of areciprocating table adapted to carry a-paper pile, a finger Ioo 'adapted to engage said pile and a vacuumsaid floor, means for holdingthe said board cylinder, with a spring-restrained joggingin normalengagement with said floor, a staboard and a stationary projectionadapted to tionary. member arranged to operate said.

. engage said jogging-board on the return jogging member to move itoutof engage- 5 movement of said table. ment with the floor, and a fingerfor elevating 3 5 3 Ina feeding'apparatus fora printingone edge of thepaper pile after the lowerpress, the combination of a reciprocating mostsheet has been engaged by the vacuumfioor on which is supported a pileof sheets of roller, substantially as set forth.

aper, a vacuumroller for removing a-sheet 6. In a paper-feedingmechanism for printro om the pile of paper, means for elevatingjug-presses, the combination of a reciproone edge of the paper pileafter the lower eating table on which is situated a pile of most-sheethas been engaged by said vac'upaper sheets, means for separating fromthe, um-roller, a hinged. jogging-board arranged pile of paper thelowermost sheet, means for to. engage with. and hold elevated the edgeof elevating one edgeof the pile of paper sheets t the paper pile, andmeans for operating-said while the separation of-the lowermost sheetjogging-board, substantially as set forth. is taking place, a front.jogging-board are r 4. In a feeding"apparatus for a printingranged tohold the sheets with their front press, the combination with thereciprocating edges elevated, and means for moving the floor arranged tocarrya. pa er pile, and the said jogging-board to allow the-pile ofpaper 15o vacuum-roller, of a joggingoard, means for sheets toassume itsnormal position at. the

holding said jogging-board in normal en-' -inoment the'paper-sheet-separating means gagement with the edge of thepile ofpaper, a come into operation. to take the lowermost stationary memberfor moving the said board sheet, substantially as setforth. relative tosaid. paper pile, and means for ele- In testimony whereof I havehereunto 25 vating one-edge of the paper pile, substani signed my namein the presence of two wit-- tially as set forth. 7 I nesses.

5. In a feeding apparatus for a printing t I JAMES ,W. HOAG. press, thecombination with thereciprocating Witnesses: I floor arranged to carry apaper pile, and the C.- M. BILLIG, o vacuum-roller',-of a jogging-boardcarried by MARTIN ARonson'N.

